Grinding-machine.



` originaiappiieatin f ie lunes, ieia,

following is a: specification.

sTATEs PATENT oEEioE.

cHAELEs n.'A NoE'roN,oE woE-cEsTEE, MAssAcHUsETrs, Assienon rizo Nom'oN GEINDING coivirANir,v or woEcEs'rEE, MAssAcHUsETTs, ApcoEroEA'rroN or MASSACHUSETTS.

To all whom may concern: I

Be it .known that L'CHARLEs H. NORTON, 'a citizen' of-the United States, .residing at Worcesteig in the county 'of `Vlorcester and State ot' Massachusetts, have invented a new and useful Grinding-Machine, .of

This invention relatesto a grinding machine and particularly to improved means for supportingthe grinding wheel slide in a surface vgrinding machine, thisapplication vbeing a .division ot'- applicants prior application, lSerial No. 772,054, tiled June 6,1913.

Ina surface grinding machine it iscustoinary to mount the grinding wheelupona shaft-extending atright angles to the line of travel of the table and it` is necessary to so support this shaft that the'wheel-mayI be Y projected forwardly over any' point onthe surface 'of the table. In' certain positions, therefore, the wheel must overhang 'its support for a considerable distance, and special provision must be made to insurethe necessary rigidity of the wheel shaft.

It is the principal object of my present. invention to .providegimproved devices for.

thus supporting the grinding wheel and the slide upon which it is mounted by the use of which greatly increased rigidity is secured.

A furtherobject of my invention is .to means by which the wheel slide may means providing for rapid approximate adjustment of the slide and forslower and more accurate final ad]ustment.

A still furtherobject of my -inventionis` to providea construction in which the wheel slide is fully protected fromv dirt and inur f x j lilith these objects in view my invention contemplates the provision in 'a grinding machine ofa rigid longitudinally-extended overhanging support or hood, within and beneath which the wheel slide is mounted for longitudinal movement.

the hood either by hand `or power and for the llongitudinal adjustment of the slide within the hood. N

My invention further consists in certain devices, arrangements and combinations of `parts which will be 4hereinafter described whichV the' Suitable provision is made forthe vertical adjustment of GEINDINe-MAGHNE.-

Specification of Letters Patent. Patented D ec'. 21, 1915.

vSerial No. 772,054.l Divided and this application'l'ed July 21, 1914. Serial No. 852,286.

and. more particularly pointed out in the appended claims. A preferred form of V my invention iS shown in the drawings 'in`.which- Figure 1 is a front view of a machin constructed in accordance with this -invention; Fig. 2 .is 'aside elevation of the ma.

chine shown in Fig. 1; and Figs.'3 and 4 are' detail views of the devices for adjusting the wheel slide longitudinally. 'l

The machine Shown in the drawings comprises a main body or frame 2 carried by supports 3 each consisting of awedgeshaped member having ears Llextending up therefrom, the ,bed-itself being supported' upon these wedges.A Adjusting lscrews provide means formoving lthe wedges. relatively to the bed whereby the ways' may be brought into accurate alineinent.' rl'he work supporting table 8 isinounted forlongitudinal movementupoii the ways 7 and suitable op"- erating devicesare provided for moving the` table 8 'longitudinallyand for automatically reversing the `travel vof the table, the reversing mechanism being controlled by dogsadj ustably secured tothe table 8. These o perating devicesgglconstitute no part of my present invention and for a full' description application. .H

A standard 10 is mounted upon vthe bedi2 and upon its right hand face is provided 'thereof reference .is made to -my originalv I with vertical bearing surfaces 11.` An overhanging hood or `support l2.is mounted for vertical movement upon the bearing surfaces 11. A vertical feed screwl `is mounted.

the standard 10 andextends through. a threaded hole in the hood 12. At its upper end thev screw 13 is connected by beveled gears to an inclined shaft which in 'turn 'is connected through suitableg'ears to a hand wheel 14 byy which the hood 12 may be .raised and lowered.

Suitable connections are also providedby which the hood may be raised and lowered by power. 'All of the devices for verticali)T moving the hood are fully described and claimed in my original application above designated.

The hood 12 is longitudinally extended on each side of the bearing surface 11', as clearly shown in Fig. 2, the extended portions of the hood having a substantially semi-cylindrical.

uppersurt'ace. On its lower side the hood 4 ing con is provided with a pair of horizontal inwardly extending projections or ways l5 upon which is supportedthe wheel slide 16. Additional bearingsurfaces 17 are also lprovided upon the hood which cooperate with inclined bearing surfaces on the upper face of the wheel slide, whereby the slide is securely confined for longitudinal movement only. j

Depending members i8 are formed upon the slide 1G and support bearings 19 for the wheel shaft 20 carrying the wheel lV upon its forward end. The shaft 2O also carries a pulleyl driven by a belt 22 from a widefaced pulley 23. The pulley 23 is mounted in a swinging frame 24.- pivoted to a bracket A 25 which is secured to a downwardly extending projection of the hood l2 and is movable vertically therewith. At its outer end the swinging frame 24 is spring-connected to a rod 26 which in turn is secured to the outer portion of the hood l2, provision being made for vertical adjustment of the rod 26. The pulley 23 may have any suitable connection to the main power shaft of the machine which will permit vertical vadjustment of the pulley 23, one form of such connection being clearly shown in the original application.

lVith the construction it will be seen that the belt 22 can travel longitudinally along ythe wide-faced pulley l23 as the wheel slide is moved forward and back, while the drivfor the pulley 23 permit vertical adjust-ment of the hood l2 upon the support 10. For the longitudinal adjustment of the wheel slide, the slide is provided with a rack 30 meshing with a pinion I3l. The pinion 3l is mounted upon a short horizontal shaft 32 connected by beveled gears 33 and 34 to a forwardly extending iorizontal shaft 35. The forward endof the shaft 35 is supported in a casing 36 mounted on a bracket 37 secured to the hood l2. A hand wheel 38 is keyed to the forward end of the shaft 35 and constitutes means for rapidly adjusting the wheel slide longitudinally through the medium of the beveled gears 33 and 34 and the rack and pinion 30 and 3l.

For the more accurate adjustment of the wheel slide, a worm wheel 40 is loosely mounted onthe shaft and meshes with a worm il upon a short shaft 42 supported in bearings in the casing 36 and having a hand wheel 43 mounted thereon. A. flanged `collar 44- is secured to the shaft 35 upon one side of the worm wheel i0 and second flanged collar l5 is slidably keyed to the shaft 35 upon the opposite side of the worm wheel. A tightening nut 46 constitutes means for forcing the collar against the worm wheel thus binding the wheel between the` two flanged collars; When thus secured the shaft 35 may be slowly rotated by means of therewith. The gua .said depending sides wheel "sli de curate final adjustnn. may be easily secured.

A water guard or shielefl 50 is mounted upon the hood i2 1 which is vertically adjustable in clamp The clamp 52 is pi'fotally connected at 53 to a link 54E which in turn is pivoted at upon a casting' 56 mounted upon the hood l2. At the pivots 53 and 55 the parte are connected by friction joints so that the shield 50 may be easily and quickly moved to any desired position without the necessity of using tools for this adjustment. l

The operation of the machine herein dcscribe'd'is thought to be clearly apparent, the work being secured upon the table l and being moved longitudinally thereby beneath the grinding wheel lil/ .lhe 'wheel is vertically adjusted through the medium of the vertical feed screw 13 and is thereby brought into proper relation with the work. The wheel .may also be adjusted laterally by the devices herein described so that it will operate over any desired portion of the table surface.

Having thus described my invention it will be evident that changes and modifications can be madetherein by those skilled in i the art without departing from the spiritv and scope thereof as set forth in the claims and I do not wish to be limited to the details herein disclosed, but

' l. in a grinding machine, in combination, a standard, a hood mounted to slide thereon, a ywheel slide supported beneath said hood and longitudinally movable therein, a grinding wheel rotatably mounted beneath said slide, and means forinoving said `slide longil tudinally..

ln a grinding machine, in

combination,

a standard a hood adustaolv su 'niorted on said standard, `and a wheel slide movable beneath said hood, said slide being supported on ways beneath said hoot, and said slide and ways being entirely covered and protected by the hood.

3.l In a grinding machine, in combination a standard, a hood adjustably supported on said standard, said hood being longitudinally extended on eacl i of said standard and having dependii .3; sides, a. wheel slide movable beneath said :for supporting and guiding said slide. n

. 4l;- in a grinding inael a.V standard, a hood vertici` A in combination, ly' movable thereliiiiod, and means on on, said hood having opposite linwardly pro 125 jecting ways in its .lower portion, a wheel" slide longitudinally o l in said ways, a grinding wheel nieu; on said slide, and means for1 rotah wheel.1

degree Aa. standard, a hood adjustably suppdrtedl .on said standard, said hood `having a Sub? 'stantia'lly` semi-cylindrical surface; with .a convextop. andk a substantially'H-at lower. portion, and a Wheelrslidemounted for lon vgitmdinal movement beneath said; hood, and

.lslidable`. Within ythe .lofWer portion thereof.

i (i1/Ina grinding machine, in combination, a standard, -ahoo'd mounted to slide thereon,

awheel. slide sup-ported 'beneath said hood and longitudinally mvable therein, a grind-:-

y ing Wheel rotatably mounted, beneath said final adjustment thereof. v l

. 7 In a grindingmaehine, in eombinatien,

slide, vand means for ymoving said slide. lon gitudinally, said means comprisingl means .for rapid preliminary adjustment .offsaid accurate slide and additional means .for

j a standard, -a hood adjustably supported on said sta.ndard,'-v a Wheel slide longitudinally movable in'said hood, a Wheel sha-ft mounted vin bearings secured beneath saidslidn-a"` grindingwheel anda drivenpulley on said shaft, an intermediate shaft moimted tomove vertically with said hood, said inter- Y mediate shaft being supported 4parallel tof the line of travel of the Wheel slide'and hav ing a wide-faced pulleyy thereon, means for driving said intermediate shaft, and belt lconnecting the Wide-faced pulley to the' pulley on the Wheel shaft and'eiiective to drive a standard, a hood adjustably supported.on said 'stan-dard, a. Wheelslide longitudinally.4

the latter. Y v 8. In a grinding machine, in combination,

' movable in said hood, a Wheel shaft mounted in bearings secured beneath said slide, a grinding .Wheel and a driven .pulley on said "shaft, an intermediate 'shaft mounted to move vertioally Withvsa-id hood, said intermediate shaft being supported parallel to the line of travel of the Wheel slide and having a Wide-faced pulley thereon, means for driving `said intermediate shaft, and a belt Connecting the Wide-faced pulley to the p ulley on the Wheel shaft and eiiective to drive .secured to said hood by .asv/ inging link, said 'link being held in Vadw's'ted. position with 'reference to said hood andjsaid clamp by.

' set my hand, in the presence of two subserii .the latter, said. een ported in a vertically swinging frame ing an adjustable yielding connection said.' hood.l In' asurfacegrindingmaehine', in

bination, a bed, a VWork'table .movable there on, astandard :fixed to sai'dbed-,a hood Se ported by Said standard, ahorizontally me able Wheel slide mounted en said 'hoede grinding wheel rotatably' supported en' sait vslide'and .a gua-rd plate 'mounted on "sait hoodjand adjasta-bie.A with'-"reletion to sein ,wheel and table.

- 10. ina surface .grinding maehine, in com '-bination, a bed, a Work table-movable thereon, a standard fixed .to saidibed', a-he'nd sup'- prtedby said standard, a horizontally movablel Wheel slide mounted on said hood, a grinding' e vv/heel" rotatably supported on said 'sli a member carried by lsaid hood and a'djustablejre'latively thereto, e guard plateadjustably mounted on said member,

and-'friction devicestohold said member and saidplatefin adjusted position relative to @mid hood and to'eaoh other.

11. Ina surface grinding machine, in combination, a bed, a Work tablemovable thereon, a standard fixed to said bed, aj'hood sup- `ported by said standard, a horizontally mov able Wheel slide mounted on said hood', a

grinding .Wheel rotatably supported on said slide and' aguard 'plate mounted on said hood Aand :adjustabh; [with vrelation to said Wheel and table, said plaZebeng yertienlly adjustable in. a damp, and said clamp 

